Side bearing for railway cars



y E. PossoN. SIDE BEARING FOR RAILWAY CARS.

APPLICATION FILED IAN-2,1920.

Patented Mar. 28, 1922 Z/ M f m INVENTOR 305507Z /BY l E. POSSON. SIDE 4BEARING FOR RAILWAY CARS.

v APPLICATION FILED IAN.2, 1920. l 1,41 1,222. Patented Mar. 28, 1922.

` /r/ i l l 30 v J5 I mx J5 ATTORN EY i specification.

EDWARD POSSON, 0F CHICAGO, ILLINOIS.

SIDE BEARING yIOR. RAILWAY CARS.

Specication of Letters Patent. l Patented B131'. 28, 1922.

. Application led January 2, 192B. Serial No'. 349,127.

To all whom it may concern.'

Be it known that I, EDWARD PossoN, a citizen of the United States, residing at Chicago, in the county ofvCook and State of Illinois, haveinvented certain new and useful improvements in Side Bearings for Railway Cars, of which the following is a vThis invention relates to a sidev bearing for railway cars and its purposeis to provide an improved device adapted to be mounted on a railway truck to coact with a part carried by the body of the car upon relative movement ofthe truck about the pivot of the truck bolster.

The principal Object of the invention in tn.

provide an improved side bearing comprising a roller which automatically returns to its central ,position when' released by the coacting part of the car. A further object is t'o provide the roller of a side bearing with counter weights adapted to return it to its normal position. A further object is to provide a geared connection between the roller and its casing in order to prevent slipping of the roller and to eii'ect an exact positioning of the roller when it returns to its initial position. Other objects relate to various other features of construction and arrange-V ment which will appear more clearly hereinafter. i

The nature of the invention will be understood from the following specification taken with the accompanying drawings in which one embodiment is illustrated.

In the drawings- .Figure 1 sho-ws a side elevation of the improved side bearing; v

Fig. 2 shows a' top plan view thereof;

Fig. 3 shows a transverse sectional view on the line 3-3 of Fig. 1i;

Fig. 4 shows an end elevation of one of the counter weight-s and its connected gear;

and

Fig. 5 shows aside elevation of illustrated in Fig. 4.

The invention comprises a casing 10 which has a base plate 11 formed integrally with upwardly extending parallel side walls 12. The upper corners of the side walls are exthe device tended longitudinally, as shown at 13, and

these extensions are united by integrally formed transverse end walls or webs 14. The side walls 12 and the end walls 14 form a substantially rectangular inclosure adapted to contain the cylindrical roller 15. The

roller 15 is adapted to travel upon a wear platel which is of the same length as the base plate 11 and adapted to fit between the ,side walls 12. The base plate 11-and the wardly from the center ofthe casing toward each, of the end walls 14, -thus insuring a Contact of the roller with a part of the car structure before said part engages any portion of the case 10.

The cylindrical roller 15 is provided with an axial bore or aperture 2O which is somewhat loosely engaged by a pin or shaft 21. This pin extends through longitudinal slots 22 which are formed in side walls-12 and it also engages apertures-23 which. are formed in the hub portions` 24 of the counter weights 25. The pin 21 is provided at one end with an enlarged head 21a and at the" other end it is reduced in diameter, as shown at 21", and riveted over a washer 26 so that the removal of the pin is prevented. Each counter weight 25 has an oblong o r elliptic'al longitudinal cross-section and this weight is suspended below the hub portion 24 by means of an intermediate neck or stem 27.

The inner sides of the counter weights 25- are provided with segmental gears or pinions 30 which are formed integrally with the hub 24vand the depending stem portions 27 the teeth being formed on the inner side of an integral substantially semicircular web 31. The body portion 25 of the counter weight is oii'set outwardly from the side wall 12, as shown in Fig. 3, andthe gear teeth extend'downwardly into this intervening space which is occupied on each side of the casing by longitudinal-rack bars 33. These rack bars are formed integrally with the side walls 12 and extend parallel with the longitudinal slots 22 so that upon movement of the pin 21 with they roller 15, the engagement of the gear 30 with the rack bars serves to elevate the depending counter weights 25 about the axis of rotation of the roller. Uponvrelative movement of 'the car truck with respect to the body of the car, a part carried by the body holster, forl example, engages 'the` upper peripheral part of i the roller 15 and'causes this roller to travel longitudinally within the'casing lO'on'the- Wear plate 16. During the travel ofthev roller, the counter weights are elevated and as soon asthe roller is released these Weights tend to return to their normal ldepending positions., I'n'so doing the gearsBO travel on the-"rack bars and automatically return the roller l5 to its cent-ral position through. their engagement with the Vpivot pin 21." The pin'2l; is mounted to rotate.A

freely with 4respect tov the hubs 24 of the counter` weights anditis somewhat smaller inv diameter than the bore 2O of the roller, andthe vertical `width of the slots 22, thereby insuring a direct bearing of the roller 15 onvthe we ar plate 16 and' releasing? the weight and stra-in of' the rollerand its load from.l

, the pin. By removing the bolts or. rivets by which the wear plate and. casingare secured inposition, .the wearplate may be readilyA replaced after it has become worn.

Although I have shown and described a single embodiment of the invention for .pur-v poses ofA illustration, it :will be understood that it may be constructed in various other 'forms without departing lfrom the appended claimsl claim 'y l. A railway sidefbearingcomprising a casing, a roller mounted within said casing,

a rack bar, a gear mounted independently=of said roller and adapted to coact" with'said rack bar during .the movement of said roller,

and aweig'ht adapted vtoreturn'saidroller,

to normal position.'I

2. A railway side casing2 a roller mountedtherein, a pinengaging said roller, a weight carried by said pin, a rack bar, and a segmental gear adapted to coaot withl said raclr` bar to elevate saidA weightupon the movement of said roller. 3.' A railway side.A bearing comprising l a casng,-a roller mounted' in "said casing, an

' axial` pin engaging said roller, a gear connected to said pin, means engaging said gear for controlling the travel o said roller and a weight for returning said roller to normal yposition in said casing.

`meshing with said gear.

`the 'scope of` bearing comprising a.

pended from-said pin, a gear movable with saidwelght, and a rackybar formed in tegrally with said casing andmeshing with said gear. `v

6.- A railway side `bearing'comprising a casing having a longitudinal slot, al rollerv -mounted insaid casingtotravel parallel to said slot, a pin -engaging said roller and said slot, a gear mounted onsaid .pimand a rack bar extending parallel to saidslot and 7. A railway side -bearing comprising a casing v'havi'nga longitudinalslot, a froller mounted in said casing to travel'parallel to lsaid slot ,fa pinengaging said roller and said slot, a gear mounted lon said pin; a rack bar extendin parallel to saidslot and meshing with sai gear, and a counter weight suspended from said pin 'and movable withl said gear.

. 8. A railway side bearing comprising a 'casing having a'longitudinall slot' therein,l a 5 roller mounted in sa'id. casing,l said roller.

having an axial borefa pin loosely engaging said bore and extending vthrough said slot, a

counter Weight freelysuspended from said pin,*and means coactingwith said weight to effect the elevation thereof abovesaid pin upon travel of saidroller, v

9. A railway side bearing comprising a casing havinga longitudinal slot therein, a roller 'mounted' in said casingbsaid roller having an axial bore, a pin loosely engaging said bore and extending through said s lot, a counter weight freely suspended from said pin, a-:gearmovable with said weight, and

rack-bar attached to said'casing and meshed. I.

with said gear.

10. A railway side 4bearing comprising a casing having a longitudinal slotthereima` -roller mounted lin s-aid casing, said roller vhaving an a-xialbore, a pin loosely engaging said bore and extendingthrough said slot, a counter ,weight freely suspended from said pin,l a, gear formedintegrally with said coun-.

ter vWeight and having its axis coincident with the axis of 'said-pin, and 'arack bar formed integrally. with said casing' and meshing with said gear. v

i" 11; A railway side bearing comprising'. a Y

casing having' parallel side walls," said side walls having longitudinal slots therein, a

-1l5'- l side walls, an axial pin engaging-#said roller and passlng through said slots, weights sus-2 vpended from the ends of said pin, gears roller mounted in said casing between said movable with said weights about the axis of Vsaid, roller,'and rack bars mounted on said side walls and meshing with said gears.

In testimony whereof, I" have subscribed.

my name.

EDWARD POSSON. 

